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-rw-r--r--src/elrail.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/elrail.cpp b/src/elrail.cpp
index 5d8f2b8f3..44481dd31 100644
--- a/src/elrail.cpp
+++ b/src/elrail.cpp
@@ -124,6 +124,9 @@ static TrackBits GetRailTrackBitsUniversal(TileIndex t, byte *override)
*/
static TrackBits MaskWireBits(TileIndex t, TrackBits tracks)
{
+ /* Single track bits are never masked out. */
+ if (likely(HasAtMostOneBit(tracks))) return tracks;
+
if (!IsPlainRailTile(t)) return tracks;
TrackdirBits neighbour_tdb = TRACKDIR_BIT_NONE;